Device for holding teeth in agricultural implements.



M. L. A'KERS.

DEVICE FOR HOLDING TEETH IN AGRICULTURAL IMPLEMENTS.

APPLIOATION FILED JUNE 21, 1912.

1,050,710. Patented Jan. 14, 1913.

u llllliliilla f INVENTOR ll laurice L.Aker5 UNITED STATES PATENTOFFICE.

WORKS, or PENDLETON,

OREGON, A CORPORATION.

DEVICE FOR HOLDING TEETH IN AGRICULTURAL IMPLEMENTS.

Specification of Letters Patent.

Patented J an. 14, 1913.

Application filed June 21, 1912. Serial No. 705,048.

To aZZ whom it may concern:

Be it known that I, MAURICE L. AKERS, a citizen of the United States,and a resident of Pendleton, in the county of Umatilla and State ofOregon, have invented a new and Improved Device for Holding Teeth inAgricultural Implements, of which the following is a full, clear, andexact description.

My invention, although applicable to the teeth or shanks generally ofagricultural implements, is more especially designed for holding theteeth of drag harrows against their supporting bars.

An object of the invention is to provide a novel holding and adjustingmeans whereby the teeth may be quickly and conveniently adjusted to bedisposed perpendicularly to the frame bar of the harrow, or at an anglelaterally to the line of draft. The'arrangement is such that theadjustment will be uniform as to all the teeth on the bar.

The invention will be particularly explained in the specific descriptionhereinafter to be given.

Reference is to be had to the accompanying drawings forming a part ofthis specification,'in which similar characters of reference indicatecorresponding parts in all the views. 7

F igure 1 is a rear view in perspective showing harrow teeth and a framebar rovided with my improved tooth-holding device; Fig. 2 is a detailwith parts in section, on about the line 2-2 in Fig. 4, the tooth insaid View being in the vertical position; Fig. 3 is a similar view withthe tooth at a lateral angle to the line of draft; Fig. 4 is ahorizontal section on about the line 4-4 in Fig. 2, and Fig. 5 is aperspective view of one of the holding blocks for the teeth.

My device is given a form to adapt it particularly to a frame bar 10 ofchannel iron, having vertically spaced horizontal flanges or lips 11, towhich bar harrow teeth or the like, indicated by the numeral 12, aresecured.

The tooth-holding block comprises a body 13 and diametrically oppositeflanges 14, the body of the block being received between the lips 11 ofthe frame bar, and the flanges 14 extending over the lips of the channelbar. A clamp bolt 15 is provided in connection with the block, said bolthaving at one end an eye 16, which is usually angular, to conform to thecross section of the tooth 12, and the opposite end of the bolt receivesa nut '17. The face of the holder block is formed with a recess 18having inclined side walls, given a V-shape to receive an angle of thetooth, said groove extending across the face of the block and to theperiphery of the flanges 14. The block has an axial bore 19,throughwhich the bolt passes, and the frame bar 10 is formed with a bolt hole20. The face of the holder block is recessed or countersunk, as at21,adjacent to the axial bore 19, the countersink extending laterally attwo sides at right angles to the groove 18, and the said recess orcountersunk portion receiving the inner angular portion of the eye 16when the nut 17 is turned home. The arrangement is such that atightening of the nut will draw the bolt axially and bring the innerangle of the tooth 12 firmly to a seat in the groove 18, the angular eye16 being partially received in the recess or counter sink 21.

On the upper and lower sides, the body 13 of the holder block is formedwith parallel faces 22 and additional parallel faces 23 at obtuse anglesto the respective adjacent faces 22. The holder block is adapted to rockwith the bolt as an axis to bring the parallel faces 23 to bear againstthe inner surfaces of the flanges or lips 11 of the frame bar 10, inwhich position the groove 18 will be disposed vertically and the teeth12 will be similarly disposed. The vertical position of the teeth isadapted for general agricultural operations, but for weeding and otherpurposes, a lateral inclination of the teeth is made, as in Fig. 3, andthis is effected by simply loosening the nut sufiiciently to permit theholder block to be turned to bring the parallel faces 22 against theflanges of the frame bar, whereby the teeth will be brought to theangular position illustrated 1n Flg. 3.

It will be seen that the faces 22, 23, by contacting with the flange,determine the extent of turning or rocking movement permitted the holderblock, so that the adjustment of the vertical or angular position of theteeth is effected with convenience and despatch, and uniformity of theadjustment results because all of the teeth will present the samelateral angle to the bar and the same position relatively to the line ofdraft.

The eye-bolt shown is a known expedient for securing harrow teeth, andit will be understood that I do not claim the same in itself; theeye-bolt is illustrated as one means I for securing my improved block.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

A device for holding agricultural teeth, comprising a channel frame bar,a tooth holding block, and a clamp bolt for securing the block to thebar, said block having a body received within the channel of the bat,and opposite flanges to bear against the flanges of the bar, the body ofthe block having two pairs of parallel faces, the faces of therespective pairs being at obtuse angles Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Iatents,

Washington, D. G.

